title: Fibromyalgia syndrome in children and adolescents: clinical features at presentation and status at follow-up.
abstract: OBJECTIVE
  To 1) describe the characteristic features of fibromyalgia syndrome (FS) in a pediatric population, 2) note similarities and differences with FS in adults, and 3) determine outcome after treatment.
  
  
  METHODS
  The Pediatric Rheumatology Clinic at the University of Rochester Medical Center is staffed by two pediatric rheumatologists and serves as a regional subspecialty referral service with approximately 450 annual patient visits, of which approximately 120 are initial evaluations. A retrospective medical record review from 1989 to 1995 was used to identify and describe the study population, and a structured telephone interview served to determine current status and response to treatment.
  
  
  RESULTS
  A total of 45 subjects were identified (41 female; 42 white; mean age, 13.3 years), of whom 33 were available for telephone interview at a mean of 2.6 years from initial diagnosis (0.1 to 7.6 years). Of a possible 15 symptoms associated with FS, subjects reported a mean of 8, with >90% experiencing diffuse pain and sleep disturbance. Less frequent were headaches (71%), general fatigue (62%), and morning stiffness (53%). The mean cumulative number of tender points summed over all visits was 9.7 (of 18). Telephone interviews showed improvement in most patients, with a mean positive change of 4.8 on a self-rating scale of 1 to 10 comparing current status to worst-ever condition.
  
  
  CONCLUSIONS
  FS in patients referred to a pediatric rheumatology clinic is characterized by diffuse pain and sleep disturbance, the latter being more common than that in adults. The mean number of tender points summed over all visits is fewer than the criterion of 11 established for adults at a single visit. The majority of patients improved over 2 to 3 years of follow-up.
authors.affiliation: Division of Immunology, Allergy and Rheumatology, Department of Pediatrics, Strong Children's Research Center, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA.
authors.forename: D M
authors.initials: DM
authors.lastname: Siegel
authors.forename: D
authors.initials: D
authors.lastname: Janeway
authors.forename: J
authors.initials: J
authors.lastname: Baum
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D005356:Fibromyalgia / Q000145:classification / Q000150:complications / Q000503:physiopathology* / Q000628:therapy; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D011379:Prognosis; D012189:Retrospective Studies; D012720:Severity of Illness Index; D012893:Sleep Wake Disorders / Q000209:etiology